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Slightly refactor DIBuilder::EmitSubProgram()

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This commit is contained in:
Martin Kinkelin 2018-09-01 01:32:02 +02:00
parent 1a08d89445
commit 070d6dab0f
1 changed files with 30 additions and 36 deletions
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66
gen/dibuilder.cpp
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@ -907,47 +907,41 @@ ldc::DISubprogram ldc::DIBuilder::EmitSubProgram(FuncDeclaration *fd) {
assert(GetCU() &&
"Compilation unit missing or corrupted in DIBuilder::EmitSubProgram");
ldc::DIFile file = CreateFile(fd);
const auto scope = GetSymbolScope(fd);
const auto name = fd->toChars();
const auto linkageName = irFunc->getLLVMFuncName();
const auto file = CreateFile(fd);
const auto lineNo = fd->loc.linnum;
const auto isLocalToUnit = fd->protection.kind == Prot::private_;
const auto isDefinition = true;
const auto scopeLine = lineNo; // FIXME
const auto flags = DIFlags::FlagPrototyped;
const auto isOptimized = isOptimizationEnabled();
// A special case is `auto foo() { struct S{}; S s; return s; }`
// The return type is a nested struct, so for this particular chicken-and-egg case
// we need to create a temporary subprogram.
irFunc->diSubprogram = DBuilder.createTempFunctionFwdDecl(
GetSymbolScope(fd), // context
fd->toChars(), // name
irFunc->getLLVMFuncName(), // linkage name
file, // file
fd->loc.linnum, // line no
nullptr, // type
fd->protection.kind == Prot::private_, // is local to unit
true, // isdefinition
fd->loc.linnum, // FIXME: scope line
DIFlags::FlagPrototyped, // Flags
isOptimizationEnabled() // isOptimized
);
ldc::DISubroutineType diFnType = nullptr;
if (!mustEmitFullDebugInfo()) {
diFnType = CreateEmptyFunctionType();
} else {
// A special case is `auto foo() { struct S{}; S s; return s; }`
// The return type is a nested struct, so for this particular
// chicken-and-egg case we need to create a temporary subprogram.
irFunc->diSubprogram = DBuilder.createTempFunctionFwdDecl(
scope, name, linkageName, file, lineNo, /*ty=*/nullptr, isLocalToUnit,
isDefinition, scopeLine, flags, isOptimized);
// Create subroutine type
ldc::DISubroutineType DIFnType = mustEmitFullDebugInfo() ?
CreateFunctionType(static_cast<TypeFunction *>(fd->type)) :
CreateEmptyFunctionType();
// Now create subroutine type.
diFnType = CreateFunctionType(static_cast<TypeFunction *>(fd->type));
}
// FIXME: duplicates?
auto SP = DBuilder.createFunction(
GetSymbolScope(fd), // context
fd->toChars(), // name
irFunc->getLLVMFuncName(), // linkage name
file, // file
fd->loc.linnum, // line no
DIFnType, // type
fd->protection.kind == Prot::private_, // is local to unit
true, // isdefinition
fd->loc.linnum, // FIXME: scope line
DIFlags::FlagPrototyped, // Flags
isOptimizationEnabled() // isOptimized
);
auto SP = DBuilder.createFunction(scope, name, linkageName, file, lineNo,
diFnType, isLocalToUnit, isDefinition,
scopeLine, flags, isOptimized);
irFunc->diSubprogram = DBuilder.replaceTemporary(
llvm::TempDINode(irFunc->diSubprogram), SP);
if (mustEmitFullDebugInfo())
DBuilder.replaceTemporary(llvm::TempDINode(irFunc->diSubprogram), SP);
irFunc->diSubprogram = SP;
return SP;
}